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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

Paul,

Can you try the latest raring kernel and verify this still exists. I
have a 3TB drive attached to my system via USB 3 port and I rsync to it
hourly. I've not had any issues at all.

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https://bugs.launchpad.net/bugs/1176810

Title:
  Kernel panic with USB 3.0 mass storage device

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I have the following hardware:
  * Dell XPS 13, which has two USB ports—one USB 2.0, one USB 3.0.
  * Sans Digital MS4UM+B (http://www.sansdigital.com/mobilestor/ms4umplusb.html) with four hard disks.

  I am trying to transfer data between two of the disks in the
  enclosure, using dd.

  When I connect the enclosure to the USB 2.0 port, dmesg contains:
  [  892.056502] usb 3-1: new high-speed USB device number 3 using xhci_hcd
  [  892.073556] usb 3-1: New USB device found, idVendor=152d, idProduct=0551
  [  892.073567] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=5
  [  892.073573] usb 3-1: Product: USB to ATA/ATAPI Bridge
  [  892.073578] usb 3-1: Manufacturer: JMicron
  [  892.073582] usb 3-1: SerialNumber: DCA1861915FF
  …and I can transfer hundreds of gigabytes without issue, at USB 2.0 speeds (20 MB/s). 

  When I connect the enclosure to the USB 3.0 port, dmesg contains:
  [  658.873399] usb 4-2: new SuperSpeed USB device number 2 using xhci_hcd
  [  658.890861] usb 4-2: New USB device found, idVendor=152d, idProduct=0551
  [  658.890872] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=5
  [  658.890878] usb 4-2: Product: USB to ATA/ATAPI Bridge
  [  658.890883] usb 4-2: Manufacturer: JMicron
  [  658.890887] usb 4-2: SerialNumber: DCA1861915FF
  …and I invariably experience a kernel panic shortly after data transfer begins. I attach two screenshots. If I can manage to probe dd (sudo killall --signal USR1 dd), the transfer appears to be going at USB 3.0 speeds.

  The enclosure was not powered on when I ran 'ubuntu-bug linux' to
  report this, so I'll attach another dmesg showing the device being
  attached to first the USB 3.0, then the USB 2.0 port.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-19-generic 3.8.0-19.30
  ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  khaeru     2007 F.... pulseaudio
  Date: Mon May  6 17:07:07 2013
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=8a50cb18-6d85-4607-b7ee-b8ce7cace6d5
  InstallationDate: Installed on 2012-10-29 (188 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: Dell Inc. Dell System XPS L322X
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=f35cf80b-a6d6-4554-9c13-4d9cba6f8c03 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-04-25 (10 days ago)
  dmi.bios.date: 09/17/2012
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 085VR5
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd09/17/2012:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn085VR5:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.

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